What color is #0B1981?

#0B1981 is a dark, vivid blue. In RGB it is rgb(11, 25, 129), and in HSL hsl(233, 84%, 27%).

Is #0B1981 accessible as text?

On white, #0B1981 has a contrast ratio of 14.28:1 (passes WCAG AA for body text); on black it is 1.47:1 (fails). For text placed on #0B1981, use white for the best readability.

What is the closest Tailwind color to #0B1981?

The nearest Tailwind CSS token is indigo-900 (#312C85).

What colors go well with #0B1981?

#0B1981 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #7F710B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0B1981 below.

Is #0B1981 good for buttons?

#0B1981 works well for buttons and highlights, but use white text on #0B1981 — black text only reaches 1.47:1, below the 4.5:1 needed for normal-size labels.

Is #0B1981 the same as CSS midnightblue?

No — #0B1981 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#0B1981 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0B1981

Not just a swatch — here's how #0B1981 works with other colors. Named schemes with #0B1981 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #0B1981 Anchor #141210 Accent #DD965A Secondary #242933 Surface #F4ECE3

Phthalo Blue carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Moody Editorial Color · 5 colors

Color #0B1981 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #130042

Phthalo Blue adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Phthalo Blue.

Coastal Morning Lead · 5 colors

Lead #0B1981 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Phthalo Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Vintage Leather Lead · 5 colors

Lead #0B1981 Secondary #7F4536 Surface #EED7C2 Accent #365246 Anchor #58223A

Phthalo Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #0B1981 Secondary #445274 Support #9D8F88 Ink #18140F

Phthalo Blue is the single accent in this high-contrast editorial system — set on near-white paper against near-black ink, with a warm grey and a desaturated tint of Phthalo Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #0B1981 actually behaves in design work — read from its OKLCH lightness, chroma and hue, not just its raw numbers. Ten signals to help you decide where this color earns its place.

Warmth 10/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 22/100

Low

Firm and assertive — carries weight and contrast.

Depth 73/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 23/100

Low

Clean and current — no dusty, aged cast.

Luxury 70/100

High

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 65/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 39/100

Low

Workable accent with care around contrast.

Surface fit 20/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 70/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #0B1981

For UI

For branding

For interior

For fashion

People also use #0B1981 with

Teal Blue Indigo Dark Olive Green Gainsboro Prussian Blue

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA

Body text Passes on white at 16px and above. Pass

Large display Fine for headings 24px+ on white. Pass

Background Pair with white text at 14.3:1. Use

Subtle surface Use #C3C9F0 for cards and hover fills. Tint 80

Avoid beside #240B7F — the hue gap is too small to read as intentional. Clash

In real applications

Not a swatch to memorise — a color to build with. Here is #0B1981 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

Dashboard

Revenue

$48.2k ▲ 12%

Brand

AVELINE

Studio

Poster

Nov 14 · 8PM

NIGHT
MARKET

Packaging

BLOOM

Botanical Wash

250 ml

Interior

Every model

Export

:root {
  --color-base: #0B1981;
  --color-base-rgb: 11 25 129;
  --color-base-oklch: oklch(30.2% 0.169 266.6);
  --color-50: #F0F2FE;
  --color-100: #D8DDFD;
  --color-200: #B4BCF8;
  --color-300: #818EEE;
  --color-400: #5364DF;
  --color-500: #3042C4;
  --color-600: #2D3995;
  --color-700: #252D69;
  --color-800: #1C2145;
  --color-900: #13162A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  phthalo-blue: {
    50: '#F0F2FE',
    100: '#D8DDFD',
    200: '#B4BCF8',
    300: '#818EEE',
    400: '#5364DF',
    500: '#3042C4',
    600: '#2D3995',
    700: '#252D69',
    800: '#1C2145',
    900: '#13162A',
  },
}

$base: #0B1981;
$base-ink: #FFFFFF;
$base-50: #F0F2FE;
$base-100: #D8DDFD;
$base-200: #B4BCF8;
$base-300: #818EEE;
$base-400: #5364DF;
$base-500: #3042C4;
$base-600: #2D3995;
$base-700: #252D69;
$base-800: #1C2145;
$base-900: #13162A;
$base-hover: #091465;
$base-subtle: #A4ACEB;

{
    "color": {
        "base": {
            "value": "#0B1981",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F2FE",
                "type": "color"
            },
            "100": {
                "value": "#D8DDFD",
                "type": "color"
            },
            "200": {
                "value": "#B4BCF8",
                "type": "color"
            },
            "300": {
                "value": "#818EEE",
                "type": "color"
            },
            "400": {
                "value": "#5364DF",
                "type": "color"
            },
            "500": {
                "value": "#3042C4",
                "type": "color"
            },
            "600": {
                "value": "#2D3995",
                "type": "color"
            },
            "700": {
                "value": "#252D69",
                "type": "color"
            },
            "800": {
                "value": "#1C2145",
                "type": "color"
            },
            "900": {
                "value": "#13162A",
                "type": "color"
            }
        }
    }
}

Palettes built on #0B1981

Color Lab

Pairs with #0B1981

UI roles & guardrails

In real applications

Scales

Every model

Export